另一個增壓誤差

Question

在此代碼中，我得到了enourmous錯誤

static void ParseTheCommandLine(int argc, char *argv[]) 
{ 
int count; 
int seqNumber; 

namespace po = boost::program_options; 

std::string appName = boost::filesystem::basename(argv[0]); 

po::options_description desc("Generic options"); 
desc.add_options() 
("version,v", "print version string") 
("help", "produce help message") 
("sequence-number", po::value<int>(&seqNumber)->default_value(0), "sequence number") 
("pem-file", po::value< vector<string> >(), "pem file") 
; 

po::positional_options_description p; 
p.add("pem-file", -1); 

po::variables_map vm; 
po::store(po::command_line_parser(argc, argv). 
      options(desc).positional(p).run(), vm); 
po::notify(vm); 

if (vm.count("pem file")) 
{ 
    cout << "Pem files are: " 
     << vm["pem-file"].as< vector<string> >() << "\n"; 
} 

cout << "Sequence number is " << seqNumber << "\n"; 

exit(1); 

../../../FIXMarketDataCommandLineParameters/FIXMarketDataCommandLineParameters.hpp|98|error：在「不匹配「運算符< <」 （std :: basic_ostream> &）（& std :: cout）），（（const char *）「Pem files are：」））< < （（const boost :: program_options :: variable_value *）vm.boost :: program_options :: variables_map :: operator []（（（const std :: string &）（& std :: basic_string，std :: allocator>（（（const char *）「pem-file」），（（const std :: allocator &）（（const std :: allocator *）（& std :: allocator（ ）））））））））） - > boost :: program_options :: variable_value ::與T = std :: vector，std :: allocator>，std :: allocator，std :: allocator>>>'|

Answer 1

向量不執行ostream & operator<<(std::ostream &)。

你或許應該這樣做：

cout << "Pem files are: "; 
for (auto & x : vm["pem-file"].as< vector<string> >()) 
    cout << x << "\n";